庄司歯車エンジニアリング Official site

Packaging machinery-oriented small inline reduction gear for holding load during tilting and inverting operations.

No need for brake stoppers! It can hold the load while stopped and allows work or experiments to be conducted at an angle. The input and output shafts are aligned in a straight line, achieving space-saving design!

This is a compact inline reduction gear equipped with our company's self-locking mechanism (Shoji-Lock). For example, it can hold a load even if the motion is stopped during the ascent, rotation, or tilting of a device, making it suitable for requests such as wanting to conduct experiments or perform tasks at a stopped position. Another feature is that traditional worm reduction gears with self-locking functions require a considerable amount of space because the input and output shafts are orthogonal. In contrast, our design has the input and output shafts aligned (inline), allowing for a lightweight, smart, and compact design that can be easily integrated into various devices. The lineup can be selected based on output shaft torque and reduction ratios, with options available for output shaft torque ranging from 5 to 100 kgm (load × torque arm). Some products are also available in all stainless steel for cleanroom compatibility. The basic model is coated with black Teflon, which is resistant to rust. Additionally, it can operate and maintain load even without power during emergencies. It is being introduced as a mechanical component in various fields, including defense and military, plant-related applications, semiconductor manufacturing equipment, automotive assembly lines, and device lid opening and closing.

Shoji Gear Engineering Co., Ltd. Official Website

basic information

【Lineup】 SRM (Manual Only / Low Speed) Series Output Shaft Torque (Load × Torque Arm) Available for 5/6/12/25/50/100 kgm Several reduction ratios available for each model All stainless steel available No handle included SRE (Power Tool Assist / High Speed) Series Output Shaft Torque (Load × Torque Arm) Available for 3/6/12/25/50 kgm Several reduction ratios available for each model

Price information

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Delivery Time

Model number/Brand name

SWM/SWE Series

Applications/Examples of results

Space-saving can be achieved compared to worm gear reducers. Efficiency is also good. Many devices that want to maintain self-holding during operation, such as furnace elevation and door opening and closing, are adopted. Used by semiconductor equipment manufacturers, automotive manufacturers (factories), plant manufacturers, and in the architecture and interior fields.

Detailed information

Line up(3)

Model number overview
SRM-005-11SS All stainless steel, compatible with clean rooms
SRM006~100 Standard lineup for manual inline reducers compatible with 6, 12, 25, 50, and 100 kgm. Various reduction ratios are also available. Please refer to the catalog for more details.
SRE003~050 Standard lineup for electric inline reducers compatible with 3, 6, 12, 25, and 50 kgm. Various reduction ratios are also available. Please refer to the catalog for more details.

Self-locking and Speed Reducer Product Catalog

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Self-Lock Rack Jack Product Catalog

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Brochure for Parts Procurement in Vietnam and Overseas

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CAD data(10)

Model number overview File
SRM-005-11 Inline reduction gear Permissible rated holding torque 5 kgm, manual use only Reduction ratio i = 11 Stainless steel version also available
  • 2D dxf ( 0B)
SRM-006 Inline reduction gear Permissible rated holding torque 6 kg·m for manual use (low-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRM-025 Inline reduction gear Permissible rated holding torque 25 kg·m, manual use only (input shaft rotation low-speed type)
  • 2D dxf ( 0B)
SRM-100 Inline reduction gear Permissible rated holding torque 100 kg·m manual only (input shaft rotation low-speed type)
  • 2D dxf ( 0B)
SRM-012 Inline reduction gear Permissible rated holding torque 12 kg·m For manual use (low-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRM-050 Inline reducer Permissible rated holding torque 50 kgm Manual only (input shaft rotation low-speed type)
  • 2D dxf ( 0B)
SRE-006 Inline reduction gear Permissible rated holding torque 6 kg·m, suitable for both electric and manual operation (high-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRE-012 Inline reduction gear Permissible rated holding torque 12 kg·m, suitable for both electric and manual operation (high-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRE-050 Inline reduction gear Permissible rated holding torque 50 kg·m, suitable for both electric and manual operation (high-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRE-025 Inline reducer Allowable rated holding torque 25 kg·m Electric and manual dual-use (input shaft high-speed rotation type)
  • 2D dxf ( 0B)

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Distributors

The load-holding function equipped reduction mechanism (shoji-lock) has been developed for application products such as winches and rack jacks since the early 2000s. Steady sales activities have borne fruit, and it has begun to be adopted for various applications. Unlike conventional worm reduction gears with self-locking functions where the input and output shafts are orthogonal, our design features them in a straight line (inline), allowing for a compact design and space-saving, which has received high praise and resulted in a diverse range of practical examples. (Patents have been obtained in Japan, the United States, the EU (Germany, France, the UK), China, South Korea, and Taiwan.) Furthermore, starting in April 2023, we launched a new overseas parts procurement business, beginning with Vietnam. Currently, a majority of our parts are procured overseas, and leveraging our achievements and network, we aim to assist companies struggling with cost reduction in parts procurement.